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Scope Poly Cyber Systems Engineer Security Clearance

Job in Aurora, Arapahoe County, Colorado, 80010, USA
Listing for: TEKsystems c/o Allegis Group
Full Time position
Listed on 2026-06-19
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer
Job Description & How to Apply Below
Position: Full Scope Poly Cyber Systems Engineer with Security Clearance
Immediate need for a Cyber Systems Engineer with an Active TS/SCI Full Scope Poly level clearance:

Job Responsibilities:

• Design, plan, implement, and perform assessment of security controls, polices, and processes compliance with National Institute of Standards and Technology (NIST) Special Publication (SP) 800-53, CNSSI 1253, and DoD RMF Knowledge Service guidance.  • Assist with the implementation of system security architectures. • Provide advanced technical analyses of cyber infrastructure challenges and problems; develop/identify technical solutions responsive to customer needs. • Participate in team reviews of technical requirements, design and implementation plans prior to deployment. 

• Serve as a Cyber Security engineer (ISSE) supporting high-level technical and practical expertise. 
• This position requires practical experience in developing and implementing a security baseline and must be able to communicate their significance and relevancy in a clear, detailed manner. Bachelor of Science degree in a STEM (Science, Technology, Engineering or Math) discipline with 12 years of relevant experience, OR a Master of Science degree in a STEM discipline with 10 years of relevant experience, OR PhD with 8 years of relevant experience.

Must have an active TS/SCI security clearance with a Full Scope Polygraph at time of application
Experience in planning and configuring enterprise-level security tools, including the configuration, installation, and operations and maintenance (O&M) of Splunk, Rapid 7, Trellix, and SQL databases
Possess DoD IAT Level II Security+ Certification.

Experience with Department of Defense (DoD) System Security Engineering activities.
Knowledge of Risk Management Framework (RMF), Security Technical Implementation Guide (STIG), and requirements development from control listings. Proficient in managing multiple responsibilities related to the engineering and implementation of Program Security Information and Event Management (SIEM)/Security Orchestration, Automation, and Response (SOAR) tools.
Capable of assessing the Program's system security posture in compliance with customer requirements and directives.
Adept at adjusting commercial security methodologies and technologies within sensitive and proprietary customer environments in accordance with NIST 800-53.

Experience with RMF (NIST 800-37) accreditation functions, including documentation, scanning, assessment, Plan of Action and Milestones (POAM) management, and all steps of the RMF process.
Interface with other cyber functional areas, internal company management, and executives with a focus on effective program execution and mission assurance.  

Experience with attaining ATOs
Current DoD 8570 IAM level III, security certification (examples: CISSP, CISM, etc.).

Preferred Qualifications:

DoD IAT Level III Certified Information Systems Security Professional (CISSP) Certification.
Ability to integrate Cyber Systems Engineering requirements with Program System Development Life Cycle (SDLC) initiatives.
Competent in identifying work requirements for SIEM/SOAR tools and translating them into JIRA tasks for agile tracking.

Experience with automation techniques for SIEM/SOAR deployment into new environments (e.g., Ansible).
Experience working on a multidisciplinary team and developing technical proposals.
Strong communication and interpersonal skills, with the ability to effectively interface with employees and management at all levels.
Experience in configuring and deploying Cross Domain Solutions (CDS).
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